/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicVertexAttribute.h
Update the overlay to reflect an edge split in the parent
virtual void OnSplitEdge ( const [FDynamicMesh3::FEdgeSplitInfo](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3\FEdgeSplitInfo) & SplitInfo )